Oh god, what was that even like? It was only 7 years ago and I barely remember. I don't know how some of you know what to say 50+ years later!
In seven years some guy on a forum named Gerontius is gonna say some truth a lot better than I could. Take it all to heart. Very few people are going to get you. There's nothing wrong with you or them, it's just the way things are for us and it'll be a lot less painful if you think of it that way.
Besides, those people who get you do exist and you were born lucky. You're going to find them. When you click you'll know almost instantly; if you don't they're not worth going after and that's okay. "Trying to make friends" doesn't work for you, it has to fall into place.
The reason that's surprising: your sister lets people get away with too much (especially now since she hasn't been hurt yet) and just because she lets you talk her ear off doesn't mean she's enjoying it. Learn to read her.
That applies to the dog too by the way. I know we got him for you but he's Mom's. Border collies only have room for one. And he's not as hostile to you as you think, you just have to take it slow. He won't be around as long as he deserves to so make sure you love him (though now that I think about it, get him to the vet around, oh, the end of 2019). Get your own dog on either July 8 or 9 2015. He won't be the one you expect but you'll know him instantly. And let him sleep in your bed from day 1, it's where he deserves to be.
Your best friend is leaving you behind. I'm sorry. You'll both be assholes in puberty soon and he'll rub you the wrong way, and he doesn't feel friendship as deeply as you do because other people just don't. I know it hurts. It still does and I wish I knew why.
Don't try so hard to act "grown up" and not be "cringe". (A) you're autistic, you're "cringe" by nature (look at your sign, you're Cancer for a reason lol), and (B) someday you'll be 20 catching up on all the nerdy teen things you didn't let yourself do and you'll feel a bit pathetic just discovering the stuff everyone else grew out of three years ago. You think you're dodging the pitfalls of being a teen but you're in one and if you keep going it'll take a long time to climb out. Also I hate to say it but nothing in the world can stop you from being a moron at 13. Especially enjoy the music you like without fear.
All those rich, spoiled kids at your school, you're just as rich and maybe more spoiled than them. It'll be at least seven years before you meet one single family as great as yours. Not even one.
In high school you'll like a few girls who might like you back. Go after them. Again, I know you wanna avoid the pitfalls but you need relationship experience. Wizards never think they'll become wizards but they do anyway. Look at your aunt. She's a cautionary tale but you're more like her than you want to admit. P.S. Get to know her better.
You have ADD, you need medication and stimulants don't work for you. Once you have it you'll be able to start your homework earlier. Dad's been telling you to start at 5 for ages already. Do it or you won't get a good night's sleep for seven years.
Start working out. You know Dad wants to teach you. Unfortunately you won't get big gains for at least ten more years, that's his genetics (6'2" 140 and he lifted even), but P.E. doesn't have to be hell. And wouldn't it be fun to be smarter and stronger than other people? I swear it's something you can change. Also if you love Dance Dance Revolution so much, learn how to actually play it well. It's fun!
Stop waiting for the world to bend to your pride. It never will. We were born with enough anger for two people and I don't know how to make it go away, but you don't have the power to hurt anyone but yourself.
Everyone on the internet is trying to bait you, including the reputable ones. Especially the reputable ones. It'll only get worse when the country's politics go to hell next year. Don't trust anyone who writes articles, answers or posts with titles.
Don't be scared of college. It's actually easier than high school once you get used to it, at least for you. Yeah, you see how your sister feels... but you feel like that anyway. And you don't have to go to class 8 hours a day! (breaking the "12" rule a little bit, that's more 14-17 but still)
And lastly, watch Homestar Runner. Sewiously. It just got off hiatus, it might help you through the lonely times, and heck, you're still a kid so the nostalgia might be less painful than it is for me. Just don't binge it all at once, it won't update often and you don't wanna run out.